The free positron lifetime in amorphous polymers at low temperature

2011 ◽  
Vol 248 (6) ◽  
pp. 1453-1458
Author(s):  
N. Laforest ◽  
C. Bas ◽  
J. De Baerdemaeker ◽  
N. Djourelov ◽  
C. Dauwe
Keyword(s):  
Low Temperature ◽  
Positron Lifetime ◽  
Amorphous Polymers ◽  
Free Positron

scholarly journals Low-temperature dynamics in amorphous polymers and low-molecular-weight glasses—what is the difference?

2011 ◽  
Vol 13 (5) ◽  
pp. 1843-1848 ◽  
Author(s):  
Ivan Yu. Eremchev ◽  
Yury G. Vainer ◽  
Andrei V. Naumov ◽  
Lothar Kador
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Amorphous Polymers ◽  
Low Molecular Weight ◽  
Temperature Dynamics ◽  
The Difference

Low-Temperature Thermal, Dielectric, and Acoustic Properties of Amorphous Polymers

1998 ◽  
pp. 373-379
Author(s):  
M. Jäckel ◽  
F. V. Schoenebeck ◽  
T. Eggert ◽  
G. Köbernik ◽  
U. Escher ◽  
...  
Keyword(s):  
Low Temperature ◽  
Amorphous Polymers ◽  
Acoustic Properties

Relationships between Positron Lifetime and Dynamics of Polymers

2012 ◽  
Vol 733 ◽  
pp. 179-182 ◽  
Author(s):  
Yang Yu ◽  
Günter Dlubek ◽  
Josef Bartoš ◽  
Helena Švajdlenková ◽  
Reinhard Krause-Rehberg
Keyword(s):  
Electron Spin Resonance ◽  
Close Relationships ◽  
Positron Lifetime ◽  
Amorphous Polymers ◽  
Positron Annihilation Lifetime ◽  
Broadband Dielectric Spectroscopy ◽  
Characteristic Temperatures ◽  
Positronium Lifetime ◽  
Spin Resonance ◽  
Mean Lifetime

In this work positron annihilation lifetime spectroscopy (PALS) is employed to study the ortho-Positronium lifetime parameters τ3>, σ3 and I3 in two structurally simple amorphous polymers 1,2-poly(butadiene) and cis-1,4-poly(isoprene). The ortho-Positronium mean lifetime parameter τ3> is compared with dynamics data from broadband dielectric spectroscopy (BDS) and electron spin resonance (ESR) experiments. Coincidences of characteristic temperatures from PALS with BDS and ESR experiments show close relationships between positron lifetime and dynamics of polymers.

Extra formation of positronium in amorphous polymers at low temperature

2011 ◽  
Vol 248 (6) ◽  
pp. 1459-1463 ◽  
Author(s):  
N. Laforest ◽  
C. Bas ◽  
J. De Baerdemaker ◽  
N. Djourelov ◽  
C. Dauwe
Keyword(s):  
Low Temperature ◽  
Amorphous Polymers
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